1
Crop evapotranspiration : guidelines for computing crop water requirements /
Book
...LWE - Agriculture - general aspects...
2
Important crops of the world and their weeds : (scientific and common names, synonyms, and WSSA / WSSJ approved computer codes)
Book
1992
...LWE - Agriculture - general aspects...
3
Origin of cultivated plants.
Book
...LWE - Agriculture - general aspects...